@mcatalyst Hello, i am facing the same type of error. When i try to connect Salesforce Addon, i insert keys of Salesforce Sandbox. Once i click connect, it redirects to login in Salesforce Produciton URL not sandbox (test) url. So if i input production credentials, i got error and could not connect. As you mentioned, you able to connect WPform to Sandbox (Salesforce). Would you kindly help me to solve my issue? and would i able to connect sandbox instead of Production? where to set the rediect URL (sf sandbox) in WPform so that i can login in salesforce test environment and field map. Thanks in Advance.
